This is the mail archive of the
ecos-discuss@sourceware.org
mailing list for the eCos project.
Lwip Ping Test with large packets
- From: "Richard Rauch" <rrauch at itrgmbh dot de>
- To: <ecos-discuss at ecos dot sourceware dot org>
- Date: Tue, 10 May 2011 19:03:53 +0200
- Subject: [ECOS] Lwip Ping Test with large packets
Hi all,
For testing our ethernet driver we are performing several ping tests.
With BSD Stack I am able to answer to ping requests with 60000 Bytes payload
(option -l 60000 at ping command)
But with lwip Stack at 3938 Byte it is a limit.
I am not sure, if it is only a configuration issue (but I have tried already
some other values), if it is a lwip stack problem or a driver problem.
When ping fails, I have a trace output on this source line in
packages/devs/eth/arm/at91/current/src/if_at91.c:
// If we found SOF but didn't find matching EOF.
if (sof_idx != -1) {
AT91_ETH_DEBUG2(true, "AT91_ETH: RX discarding fragments\n");
priv->rx_head_idx = sof_idx;
}
Richard Rauch
email: rrauch@itrgmbh.de
_______________________________________________
ITR GmbH
Informationstechnologie Rauch
Schnepfenreuther Hauptstrasse 27b
D-90425 Nuernberg
_______________________________________________
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss